Logging Libraries
Logging libraries like winston
or debug
can be helpful for debugging NodeJS applications by providing structured logging capabilities, customizable log levels, and output formats. Developers can use logging libraries to log relevant information, errors, and debugging messages to various destinations like the console, files, or external logging services.
const winston = require('winston');
const logger = winston.createLogger({
level: 'info',
format: winston.format.json(),
transports: [
new winston.transports.Console(),
new winston.transports.File({ filename: 'error.log', level: 'error' })
]
});
logger.info('This is an info message');
logger.error('This is an error message');
How do you debug Node applications?
Debugging is a crucial aspect of software development, including NodeJS applications. NodeJS offers several built-in debugging options and tools to help developers identify and fix issues efficiently. Let’s explore some common techniques and tools for debugging NodeJS applications.